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.15s}.qnum:hover{border-color:var(--primary);color:var(--primary)}.qnum.active{background:var(--primary);border-color:var(--primary);color:#fff}.qnum.correct{background:#ebfbee;border-color:#2f9e44;color:#2f9e44}.qnum.wrong{background:#fff5f5;border-color:var(--danger);color:var(--danger)}[data-theme=dark] .qnum.correct,[data-mantine-color-scheme=dark] .qnum.correct{background:#2f9e4420}[data-theme=dark] .qnum.wrong,[data-mantine-color-scheme=dark] .qnum.wrong{background:#e0313120}.quiz-body{flex:1;overflow-y:auto;padding:20px 32px;display:flex;flex-direction:column;gap:16px;max-width:860px;width:100%;margin:0 auto}.quiz-question-wrap{display:flex;flex-direction:column;gap:12px}.quiz-question-img{max-height:200px;object-fit:contain;border-radius:var(--radius);border:1px solid var(--border);align-self:center}.quiz-question-text{font-size:16px;font-weight:600;color:var(--text);line-height:1.5}.quiz-options{display:flex;flex-direction:column;gap:8px}.quiz-option{display:flex;align-items:center;gap:12px;padding:13px 16px;background:var(--card-bg);border:1.5px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:left;font-family:Montserrat,sans-serif;font-size:14px;font-weight:500;color:var(--text);transition:all .15s;width:100%}.quiz-option:hover:not(:disabled){border-color:var(--primary);background:var(--primary-light)}.quiz-option:disabled{cursor:default}.quiz-option.correct{border-color:#2f9e44;background:#ebfbee;color:#2f9e44}.quiz-option.wrong{border-color:var(--danger);background:#fff5f5;color:var(--danger)}[data-theme=dark] .quiz-option.correct,[data-mantine-color-scheme=dark] .quiz-option.correct{background:#2f9e4420}[data-theme=dark] .quiz-option.wrong,[data-mantine-color-scheme=dark] .quiz-option.wrong{background:#e0313120}.quiz-option-letter{width:28px;height:28px;border-radius:6px;background:var(--bg);border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex-shrink:0}.quiz-option.correct .quiz-option-letter{background:#2f9e44;border-color:#2f9e44;color:#fff}.quiz-option.wrong .quiz-option-letter{background:var(--danger);border-color:var(--danger);color:#fff}.quiz-explanation-wrap{display:flex;flex-direction:column;gap:8px}.quiz-explanation-toggle{display:flex;align-items:center;gap:6px;background:var(--primary-light);border:1.5px solid var(--primary);border-radius:var(--radius);padding:8px 14px;font-size:13px;font-weight:600;color:var(--primary);cursor:pointer;font-family:Montserrat,sans-serif;width:fit-content}.quiz-explanation-toggle:hover{background:var(--primary);color:#fff}.quiz-explanation-text{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;font-size:17px;color:var(--text);line-height:1.7}.quiz-nav-btns{display:flex;gap:10px;justify-content:center;padding:8px 0 16px}.quiz-nav-btn{display:flex;align-items:center;gap:6px;padding:10px 22px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--card-bg);font-family:Montserrat,sans-serif;font-size:14px;font-weight:600;color:var(--text);cursor:pointer;transition:all .15s}.quiz-nav-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.quiz-nav-btn:disabled{opacity:.4;cursor:default}.quiz-nav-btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.quiz-nav-btn.primary:hover{background:var(--primary-hover)}.quiz-result-screen{min-height:100%;width:100%;flex:1 0 auto;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px 16px;box-sizing:border-box}.quiz-result-card{background:var(--card-bg);border:1.5px solid var(--border);border-radius:20px;padding:36px 28px;text-align:center;max-width:360px;width:100%;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;gap:0}.quiz-result-badge{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}.quiz-result-badge.passed{background:#ebfbee;color:#2f9e44}.quiz-result-badge.failed{background:#fff5f5;color:var(--danger)}[data-theme=dark] .quiz-result-badge.passed,[data-mantine-color-scheme=dark] .quiz-result-badge.passed{background:#2f9e4420}[data-theme=dark] .quiz-result-badge.failed,[data-mantine-color-scheme=dark] .quiz-result-badge.failed{background:#e0313120}.quiz-result-title{font-size:22px;font-weight:800;margin:0 0 6px}.quiz-result-title.passed{color:#2f9e44}.quiz-result-title.failed{color:var(--danger)}.quiz-result-score{font-size:48px;font-weight:900;color:var(--primary);margin:4px 0 14px;line-height:1}.quiz-result-stats{display:flex;gap:8px;justify-content:center;margin-bottom:20px}.quiz-result-stat{display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 14px;border-radius:12px;border:1.5px solid;font-size:12px;font-weight:600;min-width:72px}.quiz-result-stat .stat-num{font-size:20px;font-weight:800;line-height:1}.quiz-result-stat.green{background:#ebfbee;border-color:#2f9e44;color:#2f9e44}.quiz-result-stat.red{background:#fff5f5;border-color:var(--danger);color:var(--danger)}.quiz-result-stat.blue{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}[data-theme=dark] .quiz-result-stat.green,[data-mantine-color-scheme=dark] .quiz-result-stat.green{background:#2f9e4420}[data-theme=dark] .quiz-result-stat.red,[data-mantine-color-scheme=dark] .quiz-result-stat.red{background:#e0313120}[data-theme=dark] .quiz-result-stat.blue,[data-mantine-color-scheme=dark] 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var(--border);border-radius:14px;overflow:hidden;transition:border-color .15s}.review-card.open{border-color:var(--primary)}.review-card-top{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;cursor:pointer}.review-card-top:hover{background:var(--hover-bg, rgba(0, 0, 0, .03))}.review-card-badge{flex-shrink:0;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800}.wrong-badge{background:#fff5f5;color:#e03131}.saved-badge{background:var(--primary-light);color:var(--primary)}.review-card-text{flex:1;font-size:14px;font-weight:500;color:var(--text);line-height:1.5;margin:0}.review-remove-btn{flex-shrink:0;background:none;border:none;cursor:pointer;color:var(--text-muted);padding:4px;border-radius:6px;display:flex;align-items:center;transition:background .15s,color .15s}.review-remove-btn:hover{background:#fff5f5;color:#e03131}.review-card-body{border-top:1px solid var(--border);display:flex;align-items:flex-start;gap:0}.review-card-options{flex:1;padding:10px 16px 14px;display:flex;flex-direction:column;gap:6px}.review-card-img-wrap{flex-shrink:0;width:220px;padding:10px 16px 14px 0;display:flex;align-items:center;justify-content:center}@media(max-width:640px){.review-card-body{flex-direction:column-reverse}.review-card-img-wrap{width:100%;max-width:320px;margin:0 auto;padding:10px 14px 0}.review-card-options{padding:10px 12px 14px}}.review-card-img-wrap .zoomable-wrap{width:100%;border-radius:8px;overflow:hidden;border:1px solid var(--border);background:var(--bg)}.review-card-img{width:100%;max-height:160px;object-fit:contain;border-radius:8px;background:var(--bg)}.review-option{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--text-muted);padding:6px 10px;border-radius:8px;background:var(--bg)}.review-option.correct{background:#ebfbee;color:#2f9e44;font-weight:700}[data-theme=dark] 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1200px);display:flex;flex-direction:column;align-items:center;gap:14px}.home-footer-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.8px;margin:0}.home-footer-cards{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.home-footer-btn{display:flex;align-items:center;gap:8px;padding:10px 20px;border-radius:24px;border:1.5px solid var(--border);background:var(--card-bg);cursor:pointer;font-size:13px;font-weight:600;color:var(--text);letter-spacing:.3px;transition:all .2s ease;box-shadow:var(--shadow-sm, 0 2px 6px rgba(0, 0, 0, .04))}.home-footer-btn svg{color:var(--text-muted);transition:color .2s ease}.home-footer-btn:hover{background:var(--btn-gradient, var(--primary))!important;color:#fff!important;border-color:transparent!important;transform:translateY(-2px);box-shadow:0 6px 18px #0003}.home-footer-btn:hover svg{color:#fff!important}.home-footer-btn:active{transform:translateY(0)}.qr-modal-card{background:var(--card-bg);border:1px solid var(--border);border-radius:20px;overflow:hidden;width:min(280px,calc(100vw - 32px));box-shadow:0 20px 60px #00000040;position:relative}.qr-modal-header{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px 0}.qr-modal-platform{font-size:15px;font-weight:800;color:#fff;letter-spacing:.4px}.qr-modal-body{display:flex;flex-direction:column;align-items:center;gap:10px;padding:20px 20px 24px;color:var(--text)}.qr-modal-url{font-size:13px;font-weight:700;color:var(--text)}.qr-modal-hint{font-size:11px;color:var(--text-muted);margin:0}.qr-modal-close{position:absolute;top:10px;right:12px;background:#ffffff40;border:none;color:#fff;width:24px;height:24px;border-radius:50%;font-size:11px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-weight:700;transition:background .15s}.qr-modal-close:hover{background:#fff6}.exam-screen{height:100%;flex:1;min-height:0;display:flex;flex-direction:column;background:var(--bg);overflow:hidden}.exam-topbar{background:var(--card-bg);border-bottom:1px solid var(--border);padding:6px 16px;display:flex;align-items:center;flex-shrink:0}.exam-topbar-left{display:flex;align-items:center;gap:10px;flex:1}.exam-topbar-center{flex:1;display:flex;align-items:center;justify-content:center;gap:8px}.exam-topbar-right{flex:1;display:flex;align-items:center;gap:10px;justify-content:flex-end}.exam-finish-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;height:36px;border-radius:var(--radius);font-size:13px;font-weight:600;border:1px solid var(--danger);background:var(--danger-light);color:var(--danger);cursor:pointer;transition:all .15s ease;font-family:Montserrat,sans-serif}.exam-finish-btn:hover{background:var(--danger);color:#fff;transform:translateY(-1px);box-shadow:0 2px 8px #e0313140}.exam-finish-btn:focus-visible{outline:2px solid var(--danger);outline-offset:2px}.exam-timer{padding:0 14px;height:36px;display:inline-flex;align-items:center;gap:6px;border-radius:var(--radius);font-size:13.5px;font-weight:700;border:1px solid var(--primary);background:var(--primary-light);color:var(--primary);font-variant-numeric:tabular-nums;transition:all .2s ease}.exam-timer.red{border-color:var(--danger);background:var(--danger-light);color:var(--danger)}.exam-timer.yellow{border-color:var(--warning);background:#e677001f;color:var(--warning)}[data-theme=dark] .exam-timer.yellow,[data-mantine-color-scheme=dark] .exam-timer.yellow{color:#ffd43b;border-color:#ffd43b;background:#ffd43b1f}.exam-counter{font-size:14px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}.exam-score-chip{display:inline-flex;align-items:center;gap:5px;padding:0 10px;height:32px;border-radius:var(--radius);font-size:12.5px;font-weight:700;border:1px solid;font-variant-numeric:tabular-nums}.exam-score-chip.green{background:#2f9e441a;border-color:var(--success);color:var(--success)}.exam-score-chip.red{background:var(--danger-light);border-color:var(--danger);color:var(--danger)}.exam-question-header{background:var(--card-bg);border-bottom:1px solid var(--border);padding:10px 20px;flex-shrink:0;display:flex;align-items:flex-start;justify-content:center;gap:10px}.exam-question-text{font-size:16px;font-weight:600;color:var(--text);line-height:1.6;text-align:center;max-width:900px;flex:1}.exam-two-col{flex:1;display:flex;overflow:hidden}.exam-col-options{flex:1;padding:20px 24px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;border-right:1px solid var(--border);max-width:50%}.exam-col-image{flex:1;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--bg);max-width:50%}.exam-col-image .zoomable-wrap{max-height:100%;max-width:100%;border-radius:var(--radius);border:1px solid var(--border);overflow:hidden}.exam-question-img{max-height:100%;max-width:100%;object-fit:contain;border-radius:var(--radius);border:1px solid var(--border)}.exam-img-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;opacity:.35}.exam-placeholder-text{font-size:13px;font-weight:600;color:var(--text-muted);letter-spacing:.5px}.exam-option{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--card-bg);cursor:pointer;text-align:left;font-size:14px;font-weight:500;color:var(--text);transition:all .15s;width:100%}.exam-option:hover:not(:disabled){border-color:var(--primary);background:var(--primary-light)}.exam-option:disabled{cursor:default}.exam-option.correct{border-color:#2f9e44;background:#ebfbee;color:#2f9e44}.exam-option.wrong{border-color:var(--danger);background:#fff5f5;color:var(--danger)}[data-theme=dark] .exam-option.correct,[data-mantine-color-scheme=dark] .exam-option.correct{background:#2f9e4420}[data-theme=dark] .exam-option.wrong,[data-mantine-color-scheme=dark] .exam-option.wrong{background:#e0313120}.exam-option-key{width:30px;height:30px;border-radius:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;border:1.5px solid var(--border);background:var(--bg);color:var(--text-muted)}.exam-option.correct .exam-option-key{background:#2f9e44;border-color:#2f9e44;color:#fff}.exam-option.wrong .exam-option-key{background:var(--danger);border-color:var(--danger);color:#fff}.exam-option-text{flex:1;line-height:1.4}.opt-icon{margin-left:auto;flex-shrink:0}.opt-icon.correct{color:#2f9e44}.opt-icon.wrong{color:var(--danger)}.exam-bottom{background:var(--card-bg);border-top:1px solid var(--border);padding:10px 16px 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var(--surface-alt));--xd-accent: var(--primary);--xd-ok: var(--correct, #16a34a);--xd-bad: var(--wrong, #dc2626);--xd-ok-bg: color-mix(in srgb, var(--xd-ok) 12%, transparent);--xd-bad-bg: color-mix(in srgb, var(--xd-bad) 12%, transparent);--xd-accent-bg: color-mix(in srgb, var(--xd-accent) 12%, transparent);--xd-q-size: clamp(17px, .62vw + 10px, 26px);--xd-a-size: clamp(15px, .42vw + 9.5px, 21px)}.xd-root{height:100%;flex:1;min-height:0;width:100%;max-width:2000px;margin-inline:auto;display:flex;flex-direction:column;background:var(--bg);color:var(--text);overflow:hidden;contain:layout paint}.xd-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.xd-kbd{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 5px;border-radius:4px;border:1px solid var(--xd-stroke);border-bottom-width:2px;background:var(--xd-layer-alt);color:var(--text-muted);font:600 11px/1 ui-monospace,Cascadia Mono,Consolas,monospace;white-space:nowrap;flex-shrink:0}.xd-btn{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 12px;border-radius:var(--xd-radius);border:1px solid var(--xd-stroke);background:var(--xd-layer);color:var(--text);font:inherit;font-size:13.5px;font-weight:600;cursor:pointer;transition:background-color var(--motion-fast, .12s) ease,border-color var(--motion-fast, .12s) ease;white-space:nowrap}.xd-btn:hover:not(:disabled){background:var(--xd-layer-alt)}.xd-btn:active:not(:disabled){transform:translateY(.5px)}.xd-btn:disabled{opacity:.45;cursor:default}.xd-btn:focus-visible,.xd-answer:focus-visible,.xd-nav__cell:focus-visible,.xd-media__btn:focus-visible{outline:2px solid var(--xd-accent);outline-offset:2px}.xd-btn--ghost{background:transparent;border-color:transparent}.xd-btn--ghost:hover:not(:disabled){background:var(--xd-layer-alt)}.xd-btn--primary{background:var(--xd-accent);border-color:var(--xd-accent);color:var(--on-primary, #fff)}.xd-btn--primary:hover:not(:disabled){background:var(--primary-hover, var(--xd-accent))}.xd-btn--primary .xd-kbd{background:color-mix(in srgb,#fff 18%,transparent);border-color:color-mix(in srgb,#fff 35%,transparent);color:inherit}.xd-btn--danger{background:var(--xd-bad);border-color:var(--xd-bad);color:#fff}.xd-btn--danger .xd-kbd{background:color-mix(in srgb,#fff 18%,transparent);border-color:color-mix(in srgb,#fff 35%,transparent);color:inherit}.xd-btn--danger-ghost{background:transparent;border-color:transparent;color:var(--xd-bad)}.xd-btn--danger-ghost:hover{background:var(--xd-bad-bg)}.xd-btn--block{width:100%;justify-content:center}.xd-btn.is-active{border-color:var(--xd-accent);color:var(--xd-accent);background:var(--xd-accent-bg)}.xd-toggle.is-on{color:var(--xd-accent);background:var(--xd-accent-bg)}.xd-iconbtn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;border:1px solid var(--xd-stroke);background:var(--xd-layer);color:var(--text);cursor:pointer}.xd-iconbtn:disabled{opacity:.4;cursor:default}.xd-header{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:var(--xd-gap);padding:8px 16px;background:var(--xd-layer);border-bottom:1px solid var(--xd-stroke);flex-shrink:0}.xd-header__left,.xd-header__right{display:flex;align-items:center;gap:8px;min-width:0}.xd-header__right{justify-content:flex-end;gap:4px}.xd-header__center{display:flex;justify-content:center}.xd-header__center .exam-timer{font-variant-numeric:tabular-nums;font-size:20px;font-weight:700;padding:4px 14px;border-radius:var(--xd-radius);background:var(--xd-layer-alt);border:1px solid var(--xd-stroke);min-width:92px;text-align:center}.xd-header__center .exam-timer.yellow{color:var(--warning);border-color:color-mix(in srgb,var(--warning) 45%,transparent)}.xd-header__center .exam-timer.red{color:var(--xd-bad);border-color:color-mix(in srgb,var(--xd-bad) 45%,transparent);background:var(--xd-bad-bg)}.xd-counter{font-size:14px;color:var(--text-muted);white-space:nowrap}.xd-counter b{color:var(--text);font-variant-numeric:tabular-nums}.xd-chip{display:inline-flex;align-items:center;gap:4px;height:26px;padding:0 10px;border-radius:999px;font-size:12.5px;font-weight:700;white-space:nowrap;border:1px solid var(--xd-stroke);background:var(--xd-layer-alt);font-variant-numeric:tabular-nums}.xd-chip--mode{background:var(--xd-accent-bg);color:var(--xd-accent);border-color:transparent;overflow:hidden;text-overflow:ellipsis;max-width:260px}.xd-chip--ok{color:var(--xd-ok);background:var(--xd-ok-bg);border-color:transparent}.xd-chip--bad{color:var(--xd-bad);background:var(--xd-bad-bg);border-color:transparent}.xd-chip--bad.is-danger{border-color:var(--xd-bad)}.xd-chip--streak{color:#c2410c;background:color-mix(in srgb,#f97316 14%,transparent);border-color:transparent}.xd-chip--info{color:var(--xd-accent);background:var(--xd-accent-bg);border-color:transparent}.xd-split{--xd-right: 42%;flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 8px minmax(360px,var(--xd-right));gap:0;padding:var(--xd-gap)}.xd-split.is-resizing{cursor:col-resize;-webkit-user-select:none;user-select:none}.xd-center,.xd-right{min-height:0;min-width:0;display:flex;flex-direction:column;gap:var(--xd-gap);overflow:auto;overscroll-behavior:contain}.xd-center{background:var(--xd-layer);border:1px solid var(--xd-stroke);border-radius:var(--xd-radius-lg);padding:18px 20px}.xd-right{padding-left:4px}.xd-splitter{cursor:col-resize;position:relative;touch-action:none}.xd-splitter:after{content:"";position:absolute;top:30%;bottom:30%;left:3px;width:2px;border-radius:2px;background:var(--xd-stroke);transition:background-color var(--motion-fast, .12s) ease}.xd-splitter:hover:after,.xd-split.is-resizing .xd-splitter:after{background:var(--xd-accent);top:10%;bottom:10%}.xd-qhead{display:flex;gap:12px;align-items:flex-start}.xd-qnum{flex-shrink:0;min-width:34px;height:34px;padding:0 8px;border-radius:var(--xd-radius);background:var(--xd-accent);color:var(--on-primary, #fff);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;font-variant-numeric:tabular-nums}.xd-qtext{margin:0;font-size:var(--xd-q-size);line-height:1.45;font-weight:600;white-space:pre-line}.xd-split--noimg .xd-center{justify-content:center}.xd-split--noimg .xd-qtext{font-size:calc(var(--xd-q-size) * 1.2)}.xd-media{flex:1;min-height:220px;display:flex;align-items:center;justify-content:center;border-radius:var(--xd-radius);background:var(--xd-layer-alt);overflow:hidden;position:relative}.xd-media--loading{background:linear-gradient(90deg,var(--xd-layer-alt),var(--xd-layer),var(--xd-layer-alt))}.xd-media--broken{flex-direction:column;gap:8px;color:var(--text-muted);font-size:13px;min-height:160px}.xd-media__btn{all:unset;position:absolute;inset:0;display:flex;align-items:center;justify-content:center;cursor:zoom-in}.xd-media__img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;image-rendering:auto}.xd-media--fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:transparent;-webkit-user-select:none;user-select:none;pointer-events:none;cursor:default}.xd-media__fallback-wrap{display:flex;align-items:center;justify-content:center;width:100%;height:100%}.xd-media__fallback-logo{max-width:min(52%,240px);max-height:min(52%,240px);width:auto;height:auto;object-fit:contain;object-position:center;filter:drop-shadow(0 4px 20px rgba(56,189,248,.18));-webkit-user-select:none;user-select:none;pointer-events:none}.xd-media__spinner{width:36px;height:36px;border:3px solid rgba(56,189,248,.15);border-top-color:#38bdf8;border-radius:50%;animation:real-exam-spin .8s linear infinite}@keyframes real-exam-spin{to{transform:rotate(360deg)}}.xd-media__hint{position:absolute;right:10px;bottom:10px;display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:6px;background:color-mix(in srgb,var(--xd-layer) 85%,transparent);color:var(--text-muted);font-size:12px;opacity:0;transition:opacity var(--motion-fast, .12s) ease}.xd-media__btn:hover .xd-media__hint,.xd-media__btn:focus-visible .xd-media__hint{opacity:1}.xd-answers{display:flex;flex-direction:column;gap:8px}.xd-answer{display:flex;align-items:center;gap:12px;width:100%;min-height:56px;padding:12px 14px;text-align:left;border-radius:var(--xd-radius-lg);border:1.5px solid var(--xd-stroke);background:var(--xd-layer);color:var(--text);font:inherit;font-size:var(--xd-a-size);line-height:1.4;cursor:pointer;transition:border-color var(--motion-fast, .12s) ease,background-color var(--motion-fast, .12s) ease}.xd-answer:hover:not(:disabled){border-color:var(--xd-accent);background:var(--xd-accent-bg)}.xd-answer:disabled{cursor:default}.xd-answer__key{flex-shrink:0;min-width:34px;height:30px;padding:0 4px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--xd-stroke);border-bottom-width:2px;background:var(--xd-layer-alt);font:700 13px/1 ui-monospace,Cascadia Mono,Consolas,monospace;color:var(--text-muted)}.xd-answer__text{flex:1;min-width:0}.xd-answer__status{display:inline-flex;align-items:center;gap:4px;flex-shrink:0;font-size:12px;font-weight:700;padding:3px 8px;border-radius:999px}.xd-answer__status--correct{color:var(--xd-ok);background:var(--xd-ok-bg)}.xd-answer__status--wrong{color:var(--xd-bad);background:var(--xd-bad-bg)}.xd-answer--pending,.xd-answer--chosen{border-color:var(--xd-accent);background:var(--xd-accent-bg)}.xd-answer--pending .xd-answer__key,.xd-answer--chosen .xd-answer__key{background:var(--xd-accent);color:var(--on-primary, #fff);border-color:var(--xd-accent)}.xd-answer--correct{border-color:var(--xd-ok);background:var(--xd-ok-bg)}.xd-answer--correct .xd-answer__key{background:var(--xd-ok);border-color:var(--xd-ok);color:#fff}.xd-answer--wrong{border-color:var(--xd-bad);border-style:dashed;background:var(--xd-bad-bg)}.xd-answer--wrong .xd-answer__key{background:var(--xd-bad);border-color:var(--xd-bad);color:#fff}.xd-answer--dim{opacity:.62}.xd-explain{border-radius:var(--xd-radius-lg);border:1px solid color-mix(in srgb,var(--warning) 40%,transparent);background:color-mix(in srgb,var(--warning) 9%,transparent);padding:10px 14px}.xd-explain__title{display:flex;align-items:center;gap:6px;font-weight:700;font-size:13px;color:var(--warning);margin-bottom:4px}.xd-explain__text{margin:0;font-size:14px;line-height:1.5;white-space:pre-line}.xd-actions{display:flex;gap:8px;flex-wrap:wrap}.xd-actions .xd-btn:last-child{margin-left:auto}.xd-nav{border:1px solid var(--xd-stroke);border-radius:var(--xd-radius-lg);background:var(--xd-layer);padding:10px}.xd-nav__pager{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:12.5px;color:var(--text-muted)}.xd-nav__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:5px}.xd-nav__cell{position:relative;height:32px;border-radius:6px;border:1px solid var(--xd-stroke);background:var(--xd-layer);color:var(--text);font:inherit;font-size:12.5px;font-weight:600;font-variant-numeric:tabular-nums;cursor:pointer;padding:0}.xd-nav__cell:hover{border-color:var(--xd-accent)}.xd-nav__cell--answered{background:var(--xd-accent-bg);border-color:color-mix(in srgb,var(--xd-accent) 45%,transparent)}.xd-nav__cell--correct{background:var(--xd-ok-bg);border-color:var(--xd-ok);color:var(--xd-ok)}.xd-nav__cell--wrong{background:var(--xd-bad-bg);border-color:var(--xd-bad);border-style:dashed;color:var(--xd-bad)}.xd-nav__cell.is-current{outline:2px solid var(--xd-accent);outline-offset:1px;font-weight:800}.xd-nav__cell.is-flagged:after{content:"";position:absolute;top:2px;right:2px;width:0;height:0;border-top:7px solid #f59e0b;border-left:7px solid transparent}.xd-nav__legend{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;font-size:11.5px;color:var(--text-muted)}.xd-legend:before{content:"";display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;vertical-align:-1px;border:1px solid var(--xd-stroke)}.xd-legend--current:before{outline:2px solid var(--xd-accent);outline-offset:-1px}.xd-legend--answered:before{background:var(--xd-accent-bg)}.xd-legend--correct:before{background:var(--xd-ok-bg);border-color:var(--xd-ok)}.xd-legend--wrong:before{background:var(--xd-bad-bg);border:1px dashed var(--xd-bad)}.xd-legend--flagged:before{background:#f59e0b;border-color:#f59e0b}.xd-keys-hint{margin:0;font-size:12px;color:var(--text-muted);display:flex;flex-wrap:wrap;align-items:center;gap:4px}.xd-zoom{position:fixed;inset:0;z-index:10000;background:#080c14e0;display:flex;flex-direction:column}.xd-zoom__stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:zoom-in;touch-action:none}.xd-zoom__stage.is-zoomed{cursor:grab}.xd-zoom__stage.is-zoomed:active{cursor:grabbing}.xd-zoom__img{max-width:94vw;max-height:calc(100vh - 90px);object-fit:contain;transform-origin:center center;will-change:transform;-webkit-user-select:none;user-select:none;pointer-events:none}.xd-zoom__toolbar{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;color:#e2e8f0}.xd-zoom__toolbar .xd-btn{color:#e2e8f0}.xd-zoom__toolbar .xd-btn:hover{background:#ffffff1a}.xd-zoom__hint{font-size:12px;opacity:.75;margin:0 10px}.xd-dialog-backdrop{position:fixed;inset:0;z-index:10001;background:#00000073;display:flex;align-items:center;justify-content:center;padding:16px}.xd-dialog{width:min(480px,100%);background:var(--card-bg);color:var(--text);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);padding:22px 22px 18px}.xd-dialog__icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--wrong, #dc2626) 12%,transparent);color:var(--wrong, #dc2626);margin-bottom:12px}.xd-dialog__title{margin:0 0 6px;font-size:18px;font-weight:700}.xd-dialog__desc{margin:0 0 18px;font-size:14px;line-height:1.5;color:var(--text-muted)}.xd-dialog__actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.xd-dialog .xd-btn{min-height:36px}.xd-result{width:min(620px,100%);margin:auto;background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:26px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px}.xd-result__stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.xd-result__stat{border:1px solid var(--border);border-radius:10px;padding:12px 14px;background:var(--surface-muted)}.xd-result__stat b{display:block;font-size:28px;font-variant-numeric:tabular-nums}.xd-result__stat span{font-size:12.5px;color:var(--text-muted)}.xd-result__actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}@media(max-width:1100px){.xd-root{height:auto!important;min-height:100dvh;overflow-y:auto!important;overflow-x:hidden!important;-webkit-overflow-scrolling:touch}.xd-split{display:flex;flex-direction:column;overflow:visible!important;gap:var(--xd-gap);padding:10px}.xd-splitter{display:none}.xd-center,.xd-right{overflow:visible;padding-left:0;width:100%;min-width:0}.xd-center{padding:14px}.xd-media{min-height:160px;max-height:36vh;flex:none;height:auto}.xd-header{grid-template-columns:1fr auto;padding:8px 12px;gap:8px}.xd-header__center{grid-column:2;grid-row:1}.xd-header__right{grid-column:1 / -1;flex-wrap:wrap;justify-content:flex-start;gap:6px}.xd-hide-sm{display:none}.xd-answer{padding:10px 12px;min-height:48px;gap:10px}.xd-answer__text{word-break:break-word;overflow-wrap:anywhere}.xd-actions{flex-wrap:wrap;gap:8px}.xd-actions .xd-btn{flex:1 1 calc(50% - 6px);justify-content:center}.xd-actions .xd-btn:last-child{margin-left:0}}@media(max-width:480px){.xd-header{padding:6px 8px}.xd-chip--mode{max-width:130px}.xd-qhead{gap:8px}.xd-qnum{min-width:28px;height:28px;font-size:13px}.xd-qtext{font-size:15px;line-height:1.4;word-break:break-word;overflow-wrap:anywhere}.xd-actions .xd-btn{flex:1 1 100%}.xd-nav__grid{grid-template-columns:repeat(auto-fill,minmax(28px,1fr));gap:4px}.xd-nav__cell{height:28px;font-size:11.5px}}@media(min-width:2200px){.xd-root{--xd-gap: 16px}.xd-answer{min-height:64px;padding:14px 18px}.xd-nav__grid{grid-template-columns:repeat(auto-fill,minmax(40px,1fr))}.xd-nav__cell{height:38px}}@media(prefers-reduced-motion:reduce){.xd-root *,.xd-zoom *{transition:none!important}}